After another night of violent confrontations between police and demonstrators in Ferguson, Missouri, Sen. Rand Paul (R-KY) argued Thursday that big government has gone too far in militarizing local police forces. Ahead of a potential 2016 presidential run, it was another chance for Paul's liberty-centered philosophy to appeal to libertarians and black voters. After police shot and killed an unarmed black teenager over the weekend, Ferguson residents rioted, looted, and protested this week. The police response has escalated each day, with police on Wednesday firing pepper spray and tear gas and arresting two D.C. journalists. "Americans must never sacrifice their...